I haven't plotted out Ivan vs Camille, but the scenario is starting to look familiar.
Ivan is CAT 5, now where Camille was Mid-Gulf before recon found Cat5 winds and pressure. Now comes the sticky part. In the 35 years of Hurricane Forecasting after Camille, there is still a wide margin of error. Hurricane Camille was forecast to make landfall on the Florida Panhandle. The official "Hurricane Warning" for the MS Gulf Coast Did Not go up until Camille was 18 hours from landfall. I will have to look and find when the Hurricane Watch went into effect.
Don't let your guard down. Start now. Pack a few things, fill up the cars, make reservations-you can cancel them.
If Ivan decides to do a last minute turn, you may not have time to do this.